At Las Vegas Boulevard and Mandalay Bay Road, the Strip seems to stop. A motel and a few businesses share 9.6 acres of land with overgrown weeds, piles of dirt, and chain-linked fences. That, however, could soon change. Developers propose a facelift that Clark County Commissioners are considering. The proposal on the drawing board is an amusement park with at least eight rides, including a "Sky Wheel" nearly half the height of the Stratosphere. The attraction would attach to a 42-foot-high tent that would connect with a convention center and retail space.